GB201115048D0 - Channel signature modulation - Google Patents
Channel signature modulationInfo
- Publication number
- GB201115048D0 GB201115048D0 GBGB1115048.9A GB201115048A GB201115048D0 GB 201115048 D0 GB201115048 D0 GB 201115048D0 GB 201115048 A GB201115048 A GB 201115048A GB 201115048 D0 GB201115048 D0 GB 201115048D0
- Authority
- GB
- United Kingdom
- Prior art keywords
- codewords
- channel signature
- weighted
- weights
- signature modulation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
- H04L25/40—Transmitting circuits; Receiving circuits
- H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0041—Arrangements at the transmitter end
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/7163—Spread spectrum techniques using impulse radio
- H04B1/717—Pulse-related aspects
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
- H04J3/1676—Time-division multiplex with pulse-position, pulse-interval, or pulse-width modulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03828—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties
- H04L25/03866—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties using scrambling
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
- H04L25/40—Transmitting circuits; Receiving circuits
- H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
- H04L25/4902—Pulse width modulation; Pulse position modulation
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M5/00—Conversion of the form of the representation of individual digits
- H03M5/02—Conversion to or from representation by pulses
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Power Engineering (AREA)
- Mobile Radio Communication Systems (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
Abstract
Encoding of a message is conducted using codewords selected from a codebook. The selected codewords are used to construct a corresponding plurality of waveforms, which are then weighted and added to form a signal for transmission. At a receiver, channel impulse response is used to determine which codewords from the known codebook have been used, and by which weights from a known constellation of weights the resultant waveforms have been weighted. A message embedded in a received signal can then be detected.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB1115048.9A GB201115048D0 (en) | 2011-08-31 | 2011-08-31 | Channel signature modulation |
GB1200159.0A GB2494216A (en) | 2011-08-31 | 2012-01-05 | Multiplexing weighted signals via a codebook |
US13/598,287 US8879664B2 (en) | 2011-08-31 | 2012-08-29 | Communication system, method and apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB1115048.9A GB201115048D0 (en) | 2011-08-31 | 2011-08-31 | Channel signature modulation |
Publications (1)
Publication Number | Publication Date |
---|---|
GB201115048D0 true GB201115048D0 (en) | 2011-10-19 |
Family
ID=44882009
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GBGB1115048.9A Ceased GB201115048D0 (en) | 2011-08-31 | 2011-08-31 | Channel signature modulation |
GB1200159.0A Withdrawn GB2494216A (en) | 2011-08-31 | 2012-01-05 | Multiplexing weighted signals via a codebook |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1200159.0A Withdrawn GB2494216A (en) | 2011-08-31 | 2012-01-05 | Multiplexing weighted signals via a codebook |
Country Status (2)
Country | Link |
---|---|
US (1) | US8879664B2 (en) |
GB (2) | GB201115048D0 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015116184A1 (en) * | 2014-01-31 | 2015-08-06 | Hewlett-Packard Development Company, L.P. | Constant hamming weight coding |
WO2017053329A1 (en) | 2015-09-21 | 2017-03-30 | Monolithic 3D Inc | 3d semiconductor device and structure |
US11385323B2 (en) * | 2018-06-25 | 2022-07-12 | Qualcomm Incorporated | Selection of frequency modulated continuous wave (FMWC) waveform parameters for multi-radar coexistence |
CN110572220B (en) * | 2019-06-30 | 2021-11-23 | 哈尔滨工业大学(威海) | Combined blind frequency domain equalization and no-rate decoding algorithm for no-rate underwater acoustic communication |
CN111245519A (en) * | 2020-01-07 | 2020-06-05 | 重庆邮电大学 | Lookup table-based MPPM (maximum power point modulation) iterative soft demodulation algorithm with strong robustness |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5977822A (en) * | 1998-04-04 | 1999-11-02 | Sigmatel, Inc. | Method and apparatus of pulse position demodulation |
US6735238B1 (en) * | 2000-05-26 | 2004-05-11 | Xtremespectrum, Inc. | Ultra wideband communication system, method, and device with low noise pulse formation |
WO2007079574A1 (en) * | 2006-01-09 | 2007-07-19 | University Of Victoria Innovation And Development Corporation | Ultra-wideband signal detection and pulse modulation |
JP3981399B1 (en) * | 2006-03-10 | 2007-09-26 | 松下電器産業株式会社 | Fixed codebook search apparatus and fixed codebook search method |
US8184732B2 (en) * | 2007-05-01 | 2012-05-22 | Broadcom Corporation | Method and system for codebook design for pre-coding techniques |
US8314688B2 (en) * | 2007-08-22 | 2012-11-20 | Tagarray, Inc. | Method and apparatus for low power modulation and massive medium access control |
US20100124272A1 (en) * | 2008-11-19 | 2010-05-20 | Gene Fein | Coded pulse data transmission using a look-up table |
US9401828B2 (en) * | 2010-05-20 | 2016-07-26 | Kandou Labs, S.A. | Methods and systems for low-power and pin-efficient communications with superposition signaling codes |
-
2011
- 2011-08-31 GB GBGB1115048.9A patent/GB201115048D0/en not_active Ceased
-
2012
- 2012-01-05 GB GB1200159.0A patent/GB2494216A/en not_active Withdrawn
- 2012-08-29 US US13/598,287 patent/US8879664B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US20130064272A1 (en) | 2013-03-14 |
GB201200159D0 (en) | 2012-02-15 |
GB2494216A (en) | 2013-03-06 |
US8879664B2 (en) | 2014-11-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AT | Applications terminated before publication under section 16(1) |